Quarterly report pursuant to Section 13 or 15(d)

Warrants (Details)

v3.19.3
Warrants (Details) - $ / shares
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2019
Dec. 31, 2018
Class of Warrant or Right [Line Items]      
Class of Warrant or Right, Outstanding 684,095 684,095 713,652
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 25.37 $ 25.37 $ 26.19
Convertible Preferred Stock Maximum Beneficial Ownership Percentage   9.99%  
Warrant [Member]      
Class of Warrant or Right [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Expirations 19,355 29,557